Transaction too large error when sending

Hi

Anyone else had this error when trying to send DGB from the Digibyte Core v3.0.3.0-g354c0f3-MultiAlgo (64-bit) wallet.  The transaction in question was for 1 million DGB. 

I then managed to get it to send successfully for 879000 with a transaction fee of 0.04 DGB being added.  When I tried again a few minutes later it seemed happy to send 1 million DGB, but this time it added a transaction fee of 2 DGB.  Weird...

Any ideas.